using System;

using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Math;

namespace Org.BouncyCastle.Asn1.Cms
{
	public class IssuerAndSerialNumber
		: Asn1Encodable
	{
		private X509Name	name;
		private DerInteger	serialNumber;

		public static IssuerAndSerialNumber GetInstance(
			object obj)
		{
			if (obj is IssuerAndSerialNumber)
				return (IssuerAndSerialNumber)obj;

			if (obj is Asn1Sequence)
				return new IssuerAndSerialNumber((Asn1Sequence)obj);

			throw new ArgumentException(
				"Illegal object in IssuerAndSerialNumber: " + obj.GetType().Name);
		}

		public IssuerAndSerialNumber(
			Asn1Sequence seq)
		{
			this.name = X509Name.GetInstance(seq[0]);
			this.serialNumber = (DerInteger) seq[1];
		}

		public IssuerAndSerialNumber(
			X509Name	name,
			BigInteger	serialNumber)
		{
			this.name = name;
			this.serialNumber = new DerInteger(serialNumber);
		}

		public IssuerAndSerialNumber(
			X509Name	name,
			DerInteger	serialNumber)
		{
			this.name = name;
			this.serialNumber = serialNumber;
		}

		public X509Name Name
		{
			get { return name; }
		}

		public DerInteger SerialNumber
		{
			get { return serialNumber; }
		}

		public override Asn1Object ToAsn1Object()
		{
			return new DerSequence(name, serialNumber);
		}
	}
}
